Pi Day 2017 is a funny math superhero, nerd, geek style Pi Day shirt for kids, youth, boys, girls, men, and women. It's funny and you can wear it not only on Pi Day 2017, 2018, 2019 and so on but also on any other nerdy/geeky math - algebra or geometry event. If you are looking for pi day gifts, dress, and party supplies, this gorgeous shirt, with the Pi symbol in the center of rings which actually are Pi number and starts with 3.14 and is colored in U.S. flag colors, is the first on the list!